Controller



2 SHEETS-SHEEN 1.

ATTORNEY.

J. W. RICHARDS.

CONTROLLER.

APPLICATION FILED SEPT. s, 1919.

Patented Dec. 21, 1920.

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WI TNE S SE 5 J. W. RICHARDS.

CONTROLLER.

APPLICATION FILED SEPT. 8. I9I9. 3 3 55 Patented Dec. 21, 1920.

2 SHEETSSHEEI 2- flg INVENTOR. WITNESSES BY JI/(fi p'aizar'd M W fi Mfim ATTORNEY.

PATENT OFFICE.

JOHN WILL RICHARDS, OF RALSTON KENTUCKY.

CONTROLLER.

Specification of Letters Patent.

Patented Dec. 21, 1920.

Application filed September 8, 1919. Serial No. 322,237.

To all whom it may concern.

Be it known that 1, JOHN W. RICHARDS, a citizen of the United States, residing" at Ralston, in the county of Bell and State of Kentucky, have invented new and useful Improvements in Controllers, of which the following is a specification.

This invention relates to improvements in controllers for electric motors and the like, the object being to provide a controller having the operatin parts duplicated and the lead wires branc ed and connected to such duplicate parts, so that the danger of a broken circuit is reduced to a minimum.

Another object is the provision of a controller of simple construction arranged so that the various component parts are readily accessible, thereby reducing the time and labor necessary for repairs, should the parts become broken or worn.

Another object is the provision of a novel form of contact for the controller switch, whereby the contacts may be adjusted when Worn, assuring a positive connection at all times. v

Other objects and advantages of the invention will appear as the following description is read in connection with the accompanying drawings.

Inthe drawings Figure 1 is an elevation of a particular switch embodying the present invention;

Fig. 2 is an enlarged detail sectional view on the line 22 of Fig. 1;

Fig. 3 is a detail plan view of the wheel;

ig. 4c is a sectional view on the line 44. of Fig. 3;

Fig. '5 is a similar view on the line 55 of Fig. 3;

Fig. 6'is a detail perspective view of one of the segmental contact carriers.

Referring to the drawings in detail, the numeral 10 designates a box or casing, which is provided with a suitable cover or lid,

which may be removed so that access may be had through the interior of the box.

Mounted for rotation within the box is a shaft 11, which may be provided with a suitable operating handle, whereby the shaft is rotated. Mounted upon the shaft 11 to rotate therewith is a wheel 12, the periphery of which is provided with a collector ring 13. This ring is preferably formed of a thin strip of copper of substantlally the same width as the thickness of the wheel, this strip having its ends dlsposed within a notch 14 and connected to a bolt 15, which passes through the felly of the wheel and is provided with a winged nut 16, so that by adjusting the nut the band or ring 13 may be maintained in the proper taut position upon the periphery of the wheel.

Located upon each side of the wheel 12 and in a line with the bolt 15, are contact plates 17 the latter being secured through the medium of countersunk bolts 18, so that the outer surfaces of the contact plates 17 are smooth. These plates are connected to the bolt 15, so that current flowing through the collector ring will also pass through the plates. Removably positioned between the plates 17 is block 19, the latter being formed of suitable heat resisting material, so that the material of which the wheel is formed will be protected from the heat of the current passing through the plates 17.

Mounted upon each side of the wheel 12 is a segmental contact carrier 20, each of which is provided with openings 21 extending therethrough. Mounted within each of the openings 21 and extending inwardly toward the Wheel 12, is a contact 22, in the form of a headed bolt. This bolt is mounted in a plate 23, which is disposed radially and transversely upon the outside of the contact carriers 20 and is held in position through the medium of bolts 24. Each of the contacts 22 has mounted thereon between the head and the plate 23, a coil spring 25, the action of which is to urge the head of the contact 22 into engagement with the face of the wheel 12. The contact 22 is adjusted through the medium of nuts 26, which also serve as a connection for the conductor wire of the contact.

The contacts 22 are disposed in alinement upon each side of the wheel 12 and are located in the path of the contacts 17 so that when the wheel is rotated, the said contacts 17 will consecutively engage the contacts 22 upon both sides of the said wheel.

Secured to the wall of the box 10 upon brackets 27, within each of which is pivoted a contact arm 28, the free end of the arm having a contact point 29 which bears upon the collector ring '13, springs 30 located beneath the arms 28 serving to hold the contact points 29 in such engagement.

31 indicates removable elements which are secured to the box through the medium of pins or screws 32, the said elements serving to hold the segmental contact carriers 20 in able contact arms 28, while a cable 36 leadf ing to the resistance of the controller is also provided with branch wires 37 and 38 leading from alined contacts 22 carried by the se mental contact carrier 20.

he invention is susceptible of various changes in its form, proportions and mlnor details of construction and the right is 'reserved to make such changes as properly fall within the scope of the. appended claims.

' Having described claimed is 1. A controller embodying a rotary memher, a contact upon each side thereof, a col lector ring ,on said member and connected to said contacts; yieldable contact arms engageable with said collector ring for connection with.the lead wires and a plurality of stationary spaced contacts located upon each side of the rotary member in thepath of the first mentioned contacts for connection with the resistance of the controller.

2'. A controller embodying a rotary member, a contact upon each side thereof, acollector ring on said member and connected to said contacts, yieldable contact arms engageable with said collector ring for connection with the lead wires and a plurality of spaced contacts arranged in'pairs, one contact of each pair being disposed in alinement upon each side of the rotary member in the path of the first mentioned contacts for connection with the'resistance of the controller. I

' 3. A controller embodying a rotary mem- L n I the invention, what is her, a contact upon each side thereof, acollector ring on said member and connected to said contacts, means carried by the rotary member for tightening the collector ring, yieldable contact arms engageable with said collector ring for connection with the lead wires and a plurality of spaced contacts located upon each side of the rotary member in the path of the first mentioned contacts for connection with the resistance of the controller.

4:. A controller embodying a wheel mounted for rotation, a collector ring mounted upon the periphery of said wheel, contact arms disposed in the path of and contacting with the collector ring for connection with the lead wires, contacts disposed upon opposite sides of the Wheel and connected to the collector ring and a plurality of spaced stationary contacts located upon each side of the wheel in the path of the contactcarried by said wheel.

5. A collector embodying a wheel mounted for rotation, a collector ring mounted upon the periphery of-said wheel, contact arms disposed in the path of and .contacting with the collector ring for connection with the lead wires, contacts disposed upon opposite sides of the wheel and connected to the collector ring and a plurality of s aced ad justable contacts located upon eac side of the wheel in the path of the contacts carried by said Wheel. I

6. A controller embodying a wheel mounted for rotation, a collector ring mounted .upon the periphery of said wheel, contact arms disposed in the path of and contacting with the collector ring for connection with the lead wires, contacts disposed upon oppo site sides of the wheel and connected to the collector ring and a plurality of spaced permanently located spring actuated contacts located upon each side of the wheel in the path of the contact carriedby said wheel.

In testimony whereof I afiix my signature.

JOHN WILL RICHARDS. 

